Dynamics of starch formation and gene expression during grain filling and its possible influence on grain quality

4Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

In rice, grain filling is a crucial stage where asynchronous filling of the pollinated spikelet’s of the panicle occurs. It can influence both grain quality and yield. In rice grain, starch is the dominant component and contains amylose and amylopectin. Amylose content is the chief cooking quality parameter, however, rice varieties having similar amylose content varied in other parameters. Hence, in this study, a set of varieties varying in yield (04) and another set (12) of varieties that are similar in amylose content with variation in gel consistency and alkali spreading value were used. Panicles were collected at various intervals and analysed for individual grain weight and quantities of amylose and amylopectin. Gas exchange parameters were measured in varieties varying in yield. Upper branches of the panicles were collected from rice varieties having similar amylose content and were subjected to gene expression analysis with fourteen gene specific primers of starch synthesis. Results indicate that grain filling was initiated simultaneously in multiple branches. Amylose and amylopectin quantities increased with the increase in individual grain weight. However, the pattern of regression lines of amylose and amylopectin percentages with increase in individual grain weight varied among the varieties. Gas exchange parameters like photosynthetic rate, stomatal conductance, intercellular CO2 and transpiration rate decreased with the increase in grain filling period in both good and poor yielding varieties. However, they decreased more in poor yielders. Expression of fourteen genes varied among the varieties and absence of SBE2b can be responsible for medium or soft gel consistency.

References Powered by Scopus

The MIQE guidelines: Minimum information for publication of quantitative real-time PCR experiments

12358Citations
N/AReaders
Get full text

The role of stomata in sensing and driving environmental change

1876Citations
N/AReaders
Get full text

Control of rice grain-filling and yield by a gene with a potential signature of domestication

683Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Reprogramming assimilate partitioning in the second half of the night supports grain filling in inferior spikelets under high night temperature stress in rice

0Citations
N/AReaders
Get full text

Effects of spraying 6-benzylaminopurine (6-BA) on grain filling and yield of summer maize under post-pollination high temperature stress

0Citations
N/AReaders
Get full text

Multispectral Inversion of Starch Content in Rice Grains from Yingjiang County Based on Feature Band Selection Algorithms

0Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Durbha, S. R., Siromani, N., Jaldhani, V., Krishnakanth, T., Thuraga, V., Neeraja, C. N., … Sundaram, R. M. (2024). Dynamics of starch formation and gene expression during grain filling and its possible influence on grain quality. Scientific Reports, 14(1). https://doi.org/10.1038/s41598-024-57010-4

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 3

75%

Researcher 1

25%

Readers' Discipline

Tooltip

Agricultural and Biological Sciences 4

80%

Biochemistry, Genetics and Molecular Bi... 1

20%

Save time finding and organizing research with Mendeley

Sign up for free